FSBII（八）class KMutex

//---------------------------------------------------------------------------// Sword3 Engine (c) 1999-2000 by Kingsoft//// File:KMutex.h// Date:2000.08.08// Code:WangWei(Daphnis)// Desc:Header File//---------------------------------------------------------------------------#ifndef KMutex_H#define KMutex_H//---------------------------------------------------------------------------#define SINGLE_PROCESS//---------------------------------------------------------------------------#ifdef WIN32class ENGINE_API KMutex#elseclass KMutex#endif{private:#ifdef WIN32#ifdef SINGLE_PROCESSCRITICAL_SECTION m_CriticalSection;//用於單進程的線程同步#elseHANDLE m_hMutex;//用於多進程的線程同步#endif#else    pthread_mutex_t mutex;#endifpublic:    KMutex();    ~KMutex();    void Lock(void);    void Unlock(void);};//---------------------------------------------------------------------------#endif

//---------------------------------------------------------------------------// Sword3 Engine (c) 1999-2000 by Kingsoft//// File:KMutex.cpp// Date:2000.08.08// Code:WangWei(Daphnis)// Desc:Implements a simple mutex object for thread synchronization//---------------------------------------------------------------------------#include "KWin32.h"#include "KDebug.h"#include "KMutex.h"KMutex::KMutex(){#ifdef WIN32#ifdef SINGLE_PROCESSInitializeCriticalSection(&m_CriticalSection);#elsem_hMutex = CreateMutex(NULL, FALSE, NULL);if (!m_hMutex)g_MessageBox("KMutex::KMutex() CreateMutex() failed!");#endif#else     int rc = pthread_mutex_init(&mutex, NULL);#endif}//---------------------------------------------------------------------------// 函數:~KMutex// 功能:析購函數// 參數:void// 返回:void//---------------------------------------------------------------------------KMutex::~KMutex(){#ifdef WIN32#ifdef SINGLE_PROCESSDeleteCriticalSection(&m_CriticalSection);#elseCloseHandle(m_hMutex);#endif#else     int rc = pthread_mutex_destroy(&mutex);#endif}//---------------------------------------------------------------------------// 函數:Lock// 功能:鎖定// 參數:void// 返回:void//---------------------------------------------------------------------------void KMutex::Lock(void){#ifdef WIN32#ifdef SINGLE_PROCESSEnterCriticalSection(&m_CriticalSection);#elseWaitForSingleObject(m_hMutex, INFINITE);#endif#else     int rc = pthread_mutex_lock(&mutex);#endif}//---------------------------------------------------------------------------// 函數:Unlock// 功能:解開// 參數:void// 返回:void//---------------------------------------------------------------------------void KMutex::Unlock(void){#ifdef WIN32#ifdef SINGLE_PROCESSLeaveCriticalSection(&m_CriticalSection);#elseReleaseMutex(m_hMutex);#endif#else     int rc = pthread_mutex_unlock(&mutex);#endif}